[trubleshtr]

I am trying to com. with much older robots. I have built cables, and re-built and re-checked cables between computer and controller. I still get same error code, which according to my manual means either, parity error,Over run error, or framing error.

Now, I understand the parity error , and tried changing to all other parity options systematically, = no good.
What I dont understand is what an over run or framing error is exactly?
Could someone shed some light on this for me please? Then I may know which direction to go.

Many thanks.